Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 126 discussion

Why Not C? Because Intelligent Tier the objects are automatically moved to different tiers. The question says "the data from most recent 2 yrs should be highly available and immediately retrievable", which means in intelligent tier , if you activate archiving option(as Option C specifies) , the objects will be moved to Archive tiers(instant to access to deep archive access tiers) in 90 to 730 days. Remember these archive tiers performance will be similar to S3 glacier flexible and s3 deep archive which means files cannot be retrieved immediately within 2 yrs . We have a hard requirement in question which says it should be retreivable immediately for the 2 yrs. which cannot be acheived in Intelligent tier. So B is the correct option imho. Because of the above reason Its possible only in S3 standard and then configure lifecycle configuration to move to S3 Glacier Deep Archive after 2 yrs.

B is the only right answer. C does not indicate archiving after 2 years. If it did specify 2 years, then C would also be an option.

S3 Lifecycle policies works best here as we no longer need frequently access to data that has been over 2 years and hence moving it to S3 Glacier Deep Archive help reduce costs.

Ans B - I did initially think Ans C, but rjam (1 yr, 10 mth ago) quickly quashed that notion: "Why Not C? Because Intelligent Tier the objects are automatically moved to different tiers. The question says "the data from most recent 2 yrs should be highly available and immediately retrievable", which means in intelligent tier , if you activate archiving option(as Option C specifies) , the objects will be moved to Archive tiers(instant to access to deep archive access tiers) in 90 to 730 days. Remember these archive tiers performance will be similar to S3 glacier flexible and s3 deep archive which means files cannot be retrieved immediately within 2 yrs."

B is correct, because it fits to the requirements and it still cheaper than the option C.

Stupid question: A: No immediately retrievable and cost B: No immediately retrievable C: Not unpredicted access D: Immediately retrievable but not HA F*ck the guy who made this question

B is the correct choice, the requirements are very clear, intelligent tiering is used only when we don't have a clear pattern for the access of the data, when it's unpredictable.

A. We can't move to Glacier immediately as data from last 2 yrs need to be immediately retrievable B. It's the perfect fit: getting HA and instant access (with current solution = S3 std), then moving to Deep Archive after 2 yrs (very cheap) C: Highly expensive because of Intelligent Tiering D: it lacks HA with One Zone

Data remain in S3 standard storage for 2 years then it will be move to s3 glacier deep archive after 2 year.

but your S3 intelligent-tiering will move the object to S3 infrequent access tier which a is a single AZ tier , and then the HA requirement will not be respected

i understand why "B" is more correct than "C" and is because "C" is bad formulated, if in the answer would say "life cycle after 2 years of using intelligent tiring" then it would be the correct answer. so "B" is correct

I would not opt for C simply because S3IT was specifically designed for scenarios where the access patterns are unknown. This scenario has clearly known access patterns making option B the best.

Option A is incorrect because immediately transitioning objects to S3 Glacier Deep Archive would not fulfill the requirement of keeping the most recent 2 years of data highly available and immediately retrievable. Option C is also incorrect because using S3 Intelligent-Tiering with archiving option would not meet the requirement of immediately retrievable data for the most recent 2 years. Option D is not the best choice because transitioning objects to S3 One Zone-Infrequent Access (S3 One Zone-IA) and then to S3 Glacier Deep Archive would not satisfy the requirement of immediately retrievable data for the most recent 2 years. Option B is the correct solution. By setting up an S3 Lifecycle policy to transition objects to S3 Glacier Deep Archive after 2 years, the company can keep all data for at least 25 years while ensuring that data from the most recent 2 years remains highly available and immediately retrievable in the Amazon S3 Standard storage class. This solution optimizes storage costs by leveraging the Glacier Deep Archive for long-term storage.

Why not D

B is the only one possible.

C would not work as the names of these S3 archives are called Archive Access Tier and Deep Archive access tiers, so since they mention glacier in option C , I think its B which is the correct.

It's pretty straight forward. S3 Standard answers for High Availaibility/Immediate retrieval for 2 years. S3 Intelligent Tiering would just incur additional cost of analysis while the company insures that it requires immediate retrieval in any moment and without risk to Availability. So a capital B